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java.lang.Objectorg.apache.log4j.AppenderSkeleton
org.apache.log4j.varia.NullAppender
public class NullAppender
A NullAppender merely exists, it never outputs a message to any device.
| Field Summary |
|---|
| Fields inherited from class org.apache.log4j.AppenderSkeleton |
|---|
closed, errorHandler, headFilter, layout, name, tailFilter, threshold |
| Constructor Summary | |
|---|---|
NullAppender()
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| Method Summary | |
|---|---|
void |
activateOptions()
There are no options to acticate. |
protected void |
append(LoggingEvent event)
Does not do anything. |
void |
close()
Release any resources allocated within the appender such as file handles, network connections, etc. |
void |
doAppend(LoggingEvent event)
Does not do anything. |
NullAppender |
getInstance()
Deprecated. Use getNullAppender instead. getInstance should have been static. |
static NullAppender |
getNullAppender()
Whenever you can, use this method to retreive an instance instead of instantiating a new one with new. |
boolean |
requiresLayout()
NullAppenders do not need a layout. |
| Methods inherited from class org.apache.log4j.AppenderSkeleton |
|---|
addFilter, clearFilters, finalize, getErrorHandler, getFilter, getFirstFilter, getLayout, getName, getThreshold, isAsSevereAsThreshold, setErrorHandler, setLayout, setName, setThreshold |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public NullAppender()
| Method Detail |
|---|
public void activateOptions()
activateOptions in interface OptionHandleractivateOptions in class AppenderSkeletonpublic NullAppender getInstance()
new.
public static NullAppender getNullAppender()
new.
public void close()
AppenderIt is a programming error to append to a closed appender.
public void doAppend(LoggingEvent event)
doAppend in interface AppenderdoAppend in class AppenderSkeletonprotected void append(LoggingEvent event)
append in class AppenderSkeletonpublic boolean requiresLayout()
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